Scope is 2" over center line of Bore?

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270WSM 110 V-max 3,400 FPS trajectory tables are for 1.5 scope over center line of bore. What changes in computing trajectory will I have to figure?:confused:
 
Most balistic calculators let you change the scope heigth number.
 
according to my ballistic program a .277 diamater, 110 hornady going at 3400 FPS with a 300 yard zero, and a sight in range of 100 yards, the 2" scope height gives a 2.52 inch high @ 100 and a 1.5 inch scope height gives 2.86 inch high @ 100.
 
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